On 11/6/2006 3:36 PM, Glen Herrmannsfeldt wrote: > In trying to get NULL members into a list, I found out about alist(). > > x<-alist() > > x$one<-1 > x$two<-NULL > > but x$two doesn't exist. > > It seems, though, that an alist is just a list. > > How can one put NULL members into a list? x <- c(x, list(two=NULL)) Duncan Murdoch